This option is in, but currently is only accessible from dconf, not the GUI. In dconf-editor, it is under apps -> indicators -> keylock, the option is "notifications". Turning that off disables the popup notifications.
This option is in, but currently is only accessible from dconf, not the GUI. In dconf-editor, it is under apps -> indicators -> keylock, the option is "notifications". Turning that off disables the popup notifications.